Finding the Fourth Proportional to 1,278,117.31, 1,763,585.12 and 761,861.95
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Solution
The fourth proportional to 1,278,117.31, 1,763,585.12 and 761,861.95 is: 1,051,240.27
Step by Step Solution
- Step 1: Write the proportion equation
1,278,117.31 : 1,763,585.12 = 761,861.95 : x - Step 2: Convert to fraction form
1,278,117.31/1,763,585.12 = 761,861.95/x - Step 3: Cross multiply
1,278,117.31x = 1,763,585.12 × 761,861.95 - Step 4: Simplify right side
1,278,117.31x = 1,343,608,385,886.95 - Step 5: Solve for x
x = 1,343,608,385,886.95/1,278,117.31 - Step 6: Final answer
x = 1,051,240.27
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.